Braking energy recycling device of electric automobile and method for controlling braking energy recycling device

Abstract

The invention relates to a braking energy recycling device of an electric automobile and a method for controlling the braking energy recycling device. The braking energy recycling device comprises a control system and a hydraulic braking system, wherein the control system comprises a finished automobile controller, an anti-skid braking system / traction control system / electronic stability program (ABS / TCS / ESP) controller, a motor controller, a driving motor and a feedback controller connected with a hydraulic valve block; the hydraulic braking system comprises a braking master cylinder, a braking pedal, a pressure adjuster, a front wheel braking cylinder, a rear wheel braking cylinder and the hydraulic valve block; the hydraulic block comprises two braking oil circuits, a pedal simulator shared by the two braking oil circuits and a master cylinder pressure sensor and a wheel cylinder pressure sensor which are arranged on one of the two braking oil circuits; and the feedback controller comprises a communication module, a pressure acquisition module, a control module and a driving module. The braking energy recycling device is simple in structure, small in size and low in cost; by the braking energy recycling device, a driver can have the same pedalling feeling as that of the conventional automobile; and the braking energy recycling device can be widely applied to various pure electric automobiles and hybrid electric automobiles.

Description

technical field [0001] The invention relates to a vehicle braking energy recovery device and a control method thereof, in particular to a braking energy recovery device suitable for pure electric vehicles or hybrid electric vehicles and a control method thereof. Background technique [0002] With the aggravation of energy problems and environmental pollution problems, the research and application of electric vehicles is of great significance. One of the key problems faced in the research process of electric vehicles is that the specific energy of power batteries is low, resulting in a greater disadvantage in the driving range of electric vehicles compared with traditional internal combustion engine vehicles. To solve this problem, in addition to seeking a breakthrough in the bottleneck technology of batteries, how to optimize the overall design of electric vehicles, establish an efficient and safe energy management system, and rationally use and save energy has become a key ...

AI Technical Summary

Problems solved by technology

These two systems represent the development frontier of braking energy recovery technology. However, they are both redesigned and developed for the braking system. Multiple sensors, multiple solenoid valves, hydraulic pumps, and high-pressure energy storage are added to the traditional hydraulic system. components such as controllers, the system structure becomes very complex and bulky, the installation and arrangement on the vehicle becomes more difficult, and the system cost is greatly increased

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